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TCP/IP Protocol Suite 1 Chapter 3 Objectives Upon completion you will be able to: Underlying Technology Understand the different versions of wired Ethernet.

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Presentation on theme: "TCP/IP Protocol Suite 1 Chapter 3 Objectives Upon completion you will be able to: Underlying Technology Understand the different versions of wired Ethernet."— Presentation transcript:

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TCP/IP Protocol Suite 3 3.1 Local Area Networks A local area network (LAN) is a data communication system that allows a number of independent devices to communicate directly with each other in a limited geographic area such as a single department, a single building, or a campus. A large organization may need several connected LANs.The most popular LANs are Ethernet and wireless LANs. We briefly review these technologies in this section. The topics discussed in this section include: Wired LANs: Ethernet Wireless LANs: IEEE 802.11

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TCP/IP Protocol Suite 19 3.2 Point-to-Point WANs A second type of network we encounter in the Internet is the point-to- point wide area network. A point-to-point WAN connects two remote devices using a line available from a public network such as a telephone network. We discuss the physical and data link layers of these technologies here.. The topics discussed in this section include: Physical Layer Data Link Layer

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TCP/IP Protocol Suite 29 3.3 Switched WANs The backbone networks in the Internet are usually switched WANs. A switched WAN is a wide area network that covers a large area (a state or a country) and provides access at several points to the users. Inside the network, there is a mesh of point-to-point networks that connects switches. The switches, multiple port connectors, allow the connection of several inputs and outputs. The topics discussed in this section include: X.25 Frame Relay ATM

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TCP/IP Protocol Suite 39 3.4 Connecting Devices LANs or WANs do not normally operate in isolation. They are connected to one another or to the Internet. To connect LANs or WANs, we use connecting devices. Connecting devices can operate in different layers of the Internet model. We discuss three kinds of connecting devices: repeaters (or hubs), bridges (or two-layer switches), and routers (or three-layer switches). Repeaters and hubs operate in the first layer of the Internet model. Bridges and two-layer switches operate in the first two layers. Routers and three-layer switches operate in the first three layers The topics discussed in this section include: RepeatersHubsBridgesRouter